42results about How to "Fine resolution" patented technology

Local motion estimation is described herein. Each picture of a video is partitioned into blocks for the local motion estimation. An extended-block FFT is calculated for each block, where the extended-block denotes that a certain area around the block is also included for applying FFT. Extending the block for FFT helps to account for the motion of objects that are moving into or out of the block. Phase correlation is applied to attain a set of Motion Vector (MV) candidates for the blocks, and a cost function is evaluated for each MV. If no MV candidate produces a cost function below a pre-defined threshold, a hierarchical variable block matching search is applied and the process is repeated with blocks for finer resolution. Also, predictive MV candidates are used during the block matching search along with temporal constraints tracking to select an MV that yields the minimum cost function.

A method for registering digitized images using Markov Random Fields (MRFs) includes providing a source image f and a target image g, defining a deformation grid of

control points, defining a coordinate transformation as where x is a point on the source image, p is a position vector of control point p, d_p is a displacement vector for each control point, u_p is a label for point p associated with displacement d_p, and η( ) is a weighting function for the displacement vector, defining an MRF energy functional to be minimized by T as

wherein |G| is a number of control points, |E| is a number of pairs of neighboring control points on a neighborhood system, t is an iteration counter, and associating the MRF with a primary linear program and solving the primary linear program using a fast primal-dual algorithm to yield a coordinate transformation that minimizes the energy functional.

Methods and devices are provided to obtain refractive correction with superior visual acuity (e.g., 20/10) by achieving an astigmatism-free customized refractive correction. The astigmatism-free customized refractive correction involves obtaining an objective and precise measurement of cylindrical power in a resolution between 0.01 D and 0.10 D in an eye using an objective aberrometer, reliably relating the cylindrical axis obtained from the objective aberrometer to that in a phoroptor, determining an optimized focus error of an eye through subjective refraction with a phoroptor, generating a customized refraction by combining the objective measured cylindrical power, the objective measured cylindrical axis, and the subjectively measured focus power, fabricating a custom lens with a tolerance finer than 0.09 D based on the generated customized refraction, and delivering an ophthalmic lens that can provide an astigmatism-free refractive correction for an eye.

The invention discloses a wide-range flame-retarding canvas. The wide-range flame-retarding canvas includes a fire retardant fabric base material; a layer of flame-retarding primer is coated on the fire retardant fabric base material, and the flame-retarding coating is coated on the flame-retarding primer; the formula and dosage of the flame-retarding primer according to part by weight are: 20-40 parts of ammonium polyphosphate APP, 5-15 parts of melamine MEL, 10-20 parts of dipentaerythritol DPER, 0.5-2 parts of wetting agent, 0.5-2 parts of antifoaming agent, 10-30 parts of pure acrylic emulsion, 40-50 parts of ethylene-vinyl acetate copolymer emulsion, 20-30 parts of 70% of titanium dioxide powder syrup, 0.5-2 parts of brightening agent, 100-110 parts of water, and 5-8 parts of thickening agent. The wide-range flame-retarding canvas can be printed by compatible solvent type, weak solvent type and UV solidifying type inks, and has excellent smoothness and fineness, coating firmness, good weather resistance, moisture-resisting humidity and exquisite grain line and inkjet resolution rate. Meanwhile, the wide-range flame-retarding canvas can satisfy the foreign canvas flame-retarding standard and reach the highest flame-retarding standard B1 grade at home.

The invention discloses a text-to-image generation method based on a generative adversarial network, and the method comprises the following steps: 1) inputting a text description into the network, andgenerating a word feature matrix and a sentence feature vector according to the text description; 2) adding a condition and a noise vector to the sentence feature vector to obtain an image feature matrix; 3) calculating a word context matrix of the image features; 4) calculating in the generative adversarial network by utilizing the image feature matrix and the word context matrix, and graduallygenerating images with increasingly high resolutions in three stages; 5) acquiring a local image feature matrix according to the generated image; and 6) evaluating the similarity between the generatedimage and the text description, and optimizing the next image generation. The image generation method not only can ensure that the content of the generated image is consistent with the semantics of the text description, but also can ensure that the generated image has more optimized image details, the resolution of the generated image can be effectively improved, and the diversity of the generated image is increased.

The invention discloses a quick high-sensitivity microbiological identification method based on micromolecular metabolic substance spectral analysis. The micromolecular metabolic substance of microorganism is served as a detection object of the method, and the microorganism is identified through combining a mass spectrometry with a chemometrics method. The method specifically comprises the following steps: 1, culturing a monoclonal growing microorganism strain to be identified; 2, centrifuging an obtained monoclonal microorganism thallus sample to be identified to remove a medium, adding water or a phosphate buffer solution with the pH value of 7.2-7.6 to wash, and centrifuging to remove the residual medium; 3, adding ethanol water which has the volume fraction of 75-95% and is 2-4 times of the volume of the monoclonal microorganism thallus into the monoclonal microorganism thallus to be identified, and thus obtaining an extracting solution sample; 4, carrying out mass spectrometry test on the extracting solution sample; and 5, acquiring 5-20 spectral peaks from a sample mass spectrogram, analyzing the obtained data through utilizing a chemometrics method based on multi-variate statistical analysis, and realizing the thallus identification.

The invention relates to a fluorescence lifetime imaging system and method for synchronous measurement of photon arrival time and position. The system includes a scanning translation stage, a to-be-imaged sample, an excitation light source, a focusing lens, a polychromator, and an MCP position sensitive anode detector. The scanning translation stage is used for placing the to-be-imaged sample. Theexcitation light source is used for irradiating the to-be-imaged sample. The focusing lens, the polychromator, and the MCP position sensitive anode detector are arranged in the excited light propagation direction of the to-be-imaged sample in order. The outside of the MCP position sensitive anode detector is connected to a time signal extraction module. The position sensitive anode multiplexed output of the MCP position sensitive anode detector is connected to a charge sensitive preamplifier, a photon arrival time and position synchronous measurement circuit, and an image reconstruction module in order. The time signal extraction module is connected to the photon arrival time and position synchronous measuring circuit. And the scanning translation stage is connected to the image reconstruction module. The system and method provided by the invention can achieve finer spectral resolution and can acquire more dimensional information.

The present invention provides a monolithic inductor developed using radio frequency micro electromechanical (RF MEMS) techniques. In a particular embodiment of the present invention, a tunable radio frequency microelectromechanical inductor includes a coplanar waveguide and at least one direct current actuatable contact switch positioned to vary the effective width of a narrow inductive section of the center conductor of the CPW line upon actuation the DC contact switch.

The invention discloses a passive radar direction-finding method and system based on dual receiver elliptical scanning. The passive radar direction-finding method includes: acquiring a first echo signal of a first receiver; acquiring a second echo signal of a second receiver, and constructing a first signal recognition matrix according to a motion trajectory function of the first receiver; determining a first direction-finding preprocessing vector according to the first echo signal and the first signal recognition matrix; constructing a second signal recognition matrix according to a motion trajectory function of the second receiver; determining, according to the second echo signal and the second signal recognition matrix, a second direction-finding preprocessing vector; determining the direction of the object to be tested according to the first direction-finding preprocessing vector and the second direction-finding preprocessing vector. The method adopts the elliptical scanning mode,can finely distinguish a key monitoring area. In addition, by synthesizing the direction-finding results of the two receivers, the resolution is reduced and the side lobe is greatly reduced, so that the direction-finding performance of the system is significantly improved.

The invention relates to a combined interference chamber for chemical laser device wavelength choice output. A stable chamber structure is adopted in the combined interference chamber which comprisesa recessed surface reflecting mirror, a 45 degree beam splitting sheet and two plane reflecting mirrors. The 45 degree beam splitting sheet and the two plane reflecting mirrors form an interference sub-chamber, and reflecting films having different reflectivity for laser light with different wavelengths are respectively plated on reflecting planes of the recessed surface reflector and the plane reflecting mirrors. Via control over reflectivity parameters of optical elements in a laser resonant cavity, wavelengths of a laser device can be chosen roughly; interference effects are used for closely adjacent wavelengths can be chosen in a careful way via adjustment of parameters such as a length of the interference sub-chamber, a beam splitting ratio of a beam splitting sheet and the like; thelaser device is enabled to output laser light with any single wavelength.

A resist composition is disclosed that enables formation of a favorable resist pattern using a shrink process in which, following formation of the resist pattern, a treatment such as heating is used to narrow the resist pattern, and also disclosed are a laminate and a method for forming a resist pattern that use such a resist composition. This resist composition includes a resin component (A) that displays changed alkali solubility under the action of acid, and an acid generator component (B) that generates acid on exposure. The component (A) contains structural units derived from a (meth)acrylate ester, and exhibits a glass transition temperature that falls within a range from 120 to 170° C.

Method for starting operation of a warp knitting machine having at least a bar with first needles which can be displaced in the direction of traverse relative to a carriage with second needles by means of a positioning drive which There is a rotary motor and a gear mechanism in which the bar can be displaced into a first position in which the first needles are in the interneedle spaces between the second needles and the first position is stored. It is desirable to be able to create the conditions for non-disruptive operation in a simple manner. For this reason, the bar is shifted into the second position with a predetermined adjustment path by means of the positioning drive, whether the first needles are checked to be respectively in the predetermined area of ​​a needle gap between the second needles, and if not , by means of the positioning mechanism to make a correction movement until the first needle is in a predetermined area, calculate a correction amount from the correction movement and store the correction amount for future use by the position drive device.

The application discloses a radio frequency wideband frequency agility frequency source. The radio frequency wideband frequency agility frequency source comprises a frequency reference module, a baseband module, a local oscillator module and a frequency conversion module; the frequency reference module is used to output a 1000MHz reference signal to the baseband module and output a 1000MHz excitation signal to the local oscillator module; the baseband module is used to output a 200MHz to 400MHz baseband signal to the frequency conversion module; the local oscillator module is used to output six point frequency signals to the frequency conversion module, wherein the output frequency range of the point frequency signals is 10GHz to 20GHz and the frequency interval is 2GHz; and the frequencyconversion module is used to extend the frequency of the 200MHz to 400MHz baseband signal, so that the output signal frequency covers 1.25-20GHz. Compared with the traditional frequency source, the scheme disclosed by the invention has better indexes and a smaller structure size.

Various implementations disclosed herein generate a mesh representing the surfaces in a physical environment. The mesh is generated using multi-resolution voxels based on detected depth information, e.g., from a depth camera. The techniques may use multiple hash tables to store the multi-resolution voxel data. For example, the hash tables may store each voxel's 3D position and a truncated signed distance field (TSDF) value corresponding to each voxels' distance to a nearest surface. Each of the multiple hash tables may include data corresponding to a different level of resolution and those resolutions may depend upon distance/noise or other factors. For example, voxels close to a depth camera may have a finer resolution and smaller size compared to voxels that are further from the depth camera. Techniques disclosed herein may involve using a meshing algorithm that combines multi-resolution voxel information stored in multiple hash tables to generate a single mesh.

A method and a device for extending controller pulse width modulation (PWM) resolution in the PWM control field are disclosed. The method includes: reading the actual value of a current analog quantity; acquiring the value of a preset analog quantity; comparing the actual value of the current analog quantity with the value of the preset analog quantity; and adjusting the extended PWM duty ratio of the software along the direction of increasing the analog quantity if the actual value of the current analog quantity is smaller than the value of the preset analog quantity; otherwise adjusting the extended PWM duty ratio of the software along the direction of decreasing the analog quantity if the actual value of the current analog quantity is larger than the value of the preset analog quantity. With such solution, it can effectively extend PWM resolution on the basis of not decreasing PWM frequency so as to satisfy the requirements of a precise control application field; and the system power consumption and cost can be decreased effectively due to not using a high main-frequency controller.

To provide a manufacturing method of an electron emission element which comprises a conductive thin film that includes an electron-emitting region disposed between a pair of electrodes arranged on a substrate. The method comprises the process wherein an organometal solution containing component elements for the conductive thin film is sprayed to the substrate through the nozzle while potential being kept different between the electrodes. This invention also involves a manufacture method of an electron source and a manufacture method of imaging device.

The invention discloses a vegetation ecological environment mutation monitoring method and a vegetation ecological environment mutation monitoring system, and the vegetation ecological environment mutation monitoring method comprises the following steps: obtaining an original long-time normalized vegetation index sequence, and reconstructing the original long-time normalized vegetation index sequence to obtain a reconstructed long-time normalized vegetation index sequence; training the original long-time normalized vegetation index sequence, extracting a normalized vegetation index sequence template of typical vegetation, and establishing a vegetation type template library; according to a preset period, carrying out normalized vegetation index short-time sequence segment detection on the reconstructed long-time normalized vegetation index sequence, generating a mutation result, wherein the mutation result comprises mutation and non-mutation; and when the mutation result is mutation, analyzing the normalized vegetation index time sequence of the mutation year in the mutation result by using the vegetation type template library to obtain the mutation reason. Whether vegetation mutation occurs in a monitored area can be judged in time so as to deal with the vegetation mutation in time.